Anyone have any ideas on how to convert MOV files created by iPhones to M2TS files that will be recognized by the HDWriter AE3.0?

You can't. Noting but a Panasonic camcorder will create the set of four files needed by HDWriter. I wrote a more complete answer on the Premier Elements forum where you posted the same question. Switch to a "real" editor like Premiere Elements, or one of the others, and you will be able to combine the footage of your cameras in the same project.

Does this HDWriter come with the camera? If it does then it should be able to also handle .MP4 files in addition to the .M2T AVCHD folders generated by the camera.

How do you suggest that I convert iPhone's MOV files to .MP4 files that HDwAE can handle? Assuming that is indeed possible. As bsprague says, HDwAE looks for special index files that only the Panasonic camera creates...

That's because most Panasonic cameras, including yours, can record to .MP4 format aside from AVCHD (.M2T or .mts), sometimes at the lower resolutions only, so I guess the software that comes with the cameras should be able handle it too but I'm not 100% sure.

Does this HDWriter come with the camera? If it does then it should be able to also handle .MP4 files in addition to the .M2T AVCHD folders generated by the camera.

The TM900 (subject of this topic) came with HDWriter. It is very different software. To make it work, the TM900 makes four files for every shot. One is primary and three more secretly make functions work. The three extra files do things like allow HDWriter put edited files back on the camera so you can take it to a TV and use it like a media player! It came with a cord loaded with RCA jacks! HDWriter can also cut, trim and join losslessly. There is no transcoding or rendering. When the tM900 came out, it was actually hard to make home videos play on a personal TV.

There is no way to make iPhone videos with the three accessory files. HDWriter will not edit anything not made in the camera it came with.

FWIW, when mine was new, I stuck with HDWriter for a couple of years and learned it well. I abandoned it and went on to something more capable with a wider variety of cameras.

Corel VideoStudio Pro Ultimate X8 (Boxed) at B&H for $20 only until November 30 - good deal, IMHO. This is not the latest version, but it does support UHD 4K in XAVC S. Also, it comes with screen capture tool, buying one separately may cost you as much as the whole VideoStudio package. I was looking for a screen capture tool lately, and I could not find a free tool which would be good enough in terms of resolution, codec, frame rate and duration.

As 90% of my source media from my last vacation is from the TM900 or still pictures, I am doing my editing in HDWriter. I will then import that (mostly) edited large m2ts file into PE14 and insert the MOV file at an appropriate location.

This is a short term fix, as increasing amount of videos are now starting to come from the iPhones...

Hello I hope this forum is still alive. Ive owned my cam for years and now id like to dive into it because of free time. I may be late but are there any tips for recording in NY "Times Square" at night. Any settings I should know if id like to shoot quality music video? Or maybe lense attachments, filters? Just to get the best out of this older camera today.